1/ You must check in with yourself and see if you have done the necessary healing from your past relationships. Look for recurring negative patterns, attracting drama, etc.. Hire a coach or counselor, attend a personal growth workshop. You need something BIGGER than you to step in and guide you.
2/ Focus on your goal and align your thoughts accordingly. For example, do you say that you WANT a relationship, but BELIEVE that you're not attractive enough? It's time to stop listening to the inner critic' and start focusing on what you DO like about yourself. A great exercise is to ask a friend what they like about you!
3/ Make a list of all the qualities of your Ideal Mate. Put pen to paper and get really clear about what you want, value and need to have to make them ideal for you. People don't think twice about putting time, effort and research into shopping for a car or home and the same care and attention applies when your 'shopping' for a mate.
Sending you lots of love and wishing you tremendous dating and relationship success!